Electric mixer



FIG. 1 is a front/top/left-side perspective view of an electric mixer showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left-side elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right-side elevational view thereof; and,

FIG. 6 is a top plan view thereof. 

I claim the ornamental design for electric mixer, as shown and described. 